Information processing apparatus, information processing method, and computer program

ABSTRACT

[Solution] Provided is the information processing apparatus including a processing unit configured to present content to a user on a basis of sensor information acquired by a sensor configured to detect reaction of the user to a stimulus given to the user.

TECHNICAL FIELD

The present disclosure relates to an information processing apparatus,an information processing method, and a computer program.

BACKGROUND ART

With widespread use of content, it is considered to present appropriateinformation for each user in presenting information to the user. In oneexample, a technique for analyzing the user's preference and presentinginformation suitable for the user's preference, a technique forpersonalizing an idea stimulus facilitating that the user generates anidea and presenting it to the user in the user's idea generation support(e.g., Patent Literature 1), or others are developed.

CITATION LIST Patent Literature

Patent Literature 1: JP 2010-244334A

DISCLOSURE OF INVENTION Technical Problem

Here, a human being senses external environments using five senses,namely, visual, auditory, tactile, gustatory, and olfactory senses. Itis known that a human being has each sense superior to others amongthese senses. In one example, in receiving information presentation,there is a case where information visually presented on a screen iseasier to understand than that audibly presented by voice. Thus, how topresent easy-to-understand information is different depending on theperson. Such a difference is thought to be related to difference in thedominance of each person's five senses.

In view of this, the present disclosure provides a novel and improvedinformation processing apparatus, information processing method, andcomputer program, capable of presenting information in a presentationway that allows each user to easily accept information.

Solution to Problem

According to the present disclosure, there is provided an informationprocessing apparatus including: a processing unit configured to presentcontent to a user on a basis of sensor information acquired by a sensorconfigured to detect reaction of the user to a stimulus given to theuser.

In addition, according to the present disclosure, there is provided aninformation processing method including: presenting content togetherwith a stimulus; detecting, by a sensor, reaction of a user to thestimulus given to the user; and estimating a dominant sense of the useron a basis of sense information acquired by the sensor.

In addition, according to the present disclosure, there is provided acomputer program causing a computer to function as an informationprocessing apparatus including: a processing unit configured to presentcontent to a user on a basis of sensor information acquired by a sensorconfigured to detect reaction of the user to a stimulus given to theuser.

Advantageous Effects of Invention

According to the present disclosure as described above, it is possibleto present information using a presentation way that allows each user toaccept information with ease. Note that the effects described above arenot necessarily limitative. With or in the place of the above effects,there may be achieved any one of the effects described in thisspecification or other effects that may be grasped from thisspecification.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a diagram illustrated to describe an overview of contentpresentation using an information processing apparatus according to anembodiment of the present disclosure.

FIG. 2 is a diagram illustrated to describe an example of contentpresentation for each user using the information processing apparatusaccording to the present embodiment.

FIG. 3 is a functional block diagram illustrating an exemplaryconfiguration of an information presentation system according to thepresent embodiment.

FIG. 4 is a diagram illustrated to describe a relationship betweenbiometric information and user's reaction, as an example of informationheld by a reaction evaluation information storage unit.

FIG. 5 is a diagram illustrated to describe an indicator used toevaluate user's reaction to a stimulus.

FIG. 6 is a diagram illustrated to describe an indicator in a case whereuser's reaction to a stimulus is evaluated from a facial expression.

FIG. 7 is a diagram illustrated to describe an example of sense typeinformation stored in a user model storage unit.

FIG. 8 is a diagram illustrated to describe an example of a stimulusreaction history table stored in the user model storage unit.

FIG. 9 is a flowchart illustrating an example of a way of presentinginformation performed by the information presentation system accordingto the present embodiment.

FIG. 10 is a diagram illustrated to describe, as a use case 1, an imageof a digital picture book presented as content.

FIG. 11 is a diagram illustrated to describe an example of magnitude ofstimulus information set in an impression object.

FIG. 12 is a diagram illustrated to describe contents of stimulusinformation that is set for an impression object.

FIG. 13 is a diagram illustrated to describe a caution issued to acontent creator in a case where stimulus information is excessively set.

FIG. 14 is a diagram illustrated to describe, as a use case 2, anexample of presenting guide information corresponding to a user's sensetype.

FIG. 15 is a diagram illustrated to describe, as a use case 3, anexample of presenting a word to a visual sense type user.

FIG. 16 is a diagram illustrated to describe an example of presenting aword to a tactile sense type user.

FIG. 17 is a flowchart illustrating an example of processing in a caseof changing the way of presentation of content depending on a change inuser's reaction.

FIG. 18 is a hardware configuration diagram illustrating a hardwareconfiguration of a functional unit that constitutes the informationpresentation system according to the present embodiment.

MODE(S) FOR CARRYING OUT THE INVENTION

Hereinafter, (a) preferred embodiment(s) of the present disclosure willbe described in detail with reference to the appended drawings. Notethat, in this specification and the appended drawings, structuralelements that have substantially the same function and structure aredenoted with the same reference numerals, and repeated explanation ofthese structural elements is omitted.

Moreover, the description will be given in the following order.

1. Overview

2. Configuration of information processing apparatus3. Information presentation way4. Use case[Use case 1: Digital picture book][Use case 2: Presentation of guide information for each sense type][Use case 3: Digital teaching materials](1) English word learning method(2) Change of content presentation depending on change in user reaction[Use case 4: Use of estimated user model](1) Learning support (class division or team division)(2) Theme park, Art gallery, and Exhibition(3) Communication support5. Hardware configuration

<1. Overview>

An overview of a way of presenting content by an information processingapparatus according to an embodiment of the present disclosure is nowdescribed with reference to FIGS. 1 and 2. FIG. 1 is a diagramillustrated to describe an overview of content presentation using theinformation processing apparatus according to the present embodiment.FIG. 2 is a diagram illustrated to describe an example of contentpresentation for each user using the information processing apparatusaccording to the present embodiment.

The information processing apparatus according to the present embodimentpresents information using a presentation way that allows each user toeasily accept information. This technology estimates a sense that worksdominantly among the user's senses (hereinafter also referred to as“dominant sense”) and presents information in such a manner to stimulatethe dominant sense, so that the user accepts information without beingsubjected to load. It is possible to estimate the dominant sense of eachuser on the basis of the user's biometric information.

Specifically, as illustrated in FIG. 1, in presenting information to auser, information is presented in such a manner that a sense (e.g.,visual, auditory, or tactile sense) is stimulated (P1). In this event,biometric information of the user who received the stimulus is acquired(P2). Then, the reaction of the user who received the stimulus isestimated by analyzing the acquired biometric information of the user,and whether or not the stimulus given on the basis of the user'sreaction has an effect on the user is evaluated (P3). The evaluation ofthe process P3 is fed back to a functional unit, which presents theinformation, to use for consideration in presenting the information tothe user later and is employed as information used to estimate a user'sdominant sense from the user's reaction to the stimulus (P4). Theprocess P4 estimates the user's dominant sense on the basis of thereactions to various stimuli presented to the user in the processes P1to P3. The feedback of the estimated dominant sense of the user to afunctional unit used to present the information allows the informationto be present to the user in such a manner to stimulate the dominantsense.

In one example, as illustrated in FIG. 2, it is assumed that there is anobject 10 to be impressed by a viewer (hereinafter also referred to as“impression object”) among objects included in the video content. Onlythe addition of stimulus information is set in the video content inpresenting an impression object 10. When the impression object 10 is setin the video content, the information processing apparatus sets thestimulus information in the impression object 10 on the basis of theviewer's dominant sense for the video content and plays back the videocontent.

Here, it is said that the way of recognizing the information differs foreach user depending on the user's dominant sense. In the presentdisclosure, differences in information recognition depending on theuser's dominant sense are represented by classifying them into sensetypes. Here, three sense types are set, for example, visual sense typein which visual sense works dominantly, auditory sense type in whichauditory sense works dominantly, and tactile sense type in which tactualsense works dominantly. How to receive information, how to communicateit, how to store it, and so on are different depending on each sensetype, and in one example, these differences appear in the body'smovement.

The description is first given of the movement of eyeball as an exampleof the body's movement. The visual sense type user tends to have themovement of the eyeball that looks upwards or looks around restlessly.In addition, the auditory sense type user tends to move the eyes alongthe contents of the information while looking at one point or lookdownward slightly. The tactile sense type user tends to swing the eyesin the horizontal direction or downward. The description is given of themovement of hand or arm as another example of the body's movement. Thevisual sense type user tends to move the hand or the like upward, theauditory sense type user tends to move it according to the meaning ofthe story, and the tactile sense type user tends to move the arm up anddown exaggeratedly.

Further, for transmission and storage of information, in many cases, thevisual sense type user tends to have strong obsession about an image orcolor, have a logical leap in speech, or talk rapidly. Then, the visualsense type user tends to perceive the information in terms of planes andstore it. In addition, the auditory sense type user tends to haveobsession about time or distance and so speak consistently. Many peoplespeak at a slow speed with less intonation of voice. Then, the auditorysense type user tends to associate information and store it in terms oflines. The tactile sense type user tends to have a lot of onomatopoeiaor mimetic words and have much intonation of voices. Then, the tactilesense type user tends to store information individually in terms ofpoints.

Thus, in the present disclosure, the user's dominant sense is estimatedand information is presented to the user in such a manner to stimulatethe dominant sense. In one example, in FIG. 2, it is assumed that anelephant included in the video content is impressed to the user as animpression object 10. In this event, when the user's sense type is thevisual sense type, the information processing apparatus can scale up ordown, move, or blink the elephant that is the impression object 10 insuch a manner to stimulate the visual sense that is the dominant sense.In addition, when the user's sense type is the auditory sense type, theinformation processing apparatus can output its cry or sound effect insuch a manner to stimulate the auditory sense that is the dominant senseas well as the display of the elephant that is the impression object 10.Furthermore, when the user's sense type is the tactile sense type, theinformation processing apparatus can vibrate equipment that the usertouches while holding or wearing it in such a manner to stimulate thetactile sense that is the dominant sense as well as the display of theelephant that is the impression object 10. The equipment to be vibratedcan be equipment itself provided with a display device, such as a tabletterminal, a smartphone, or a wearable terminal, which plays back thevideo content, or can be other devices than the equipment that playsback the video content. In this case, the equipment to be vibrated canvibrate upon reception of an instruction given from the equipment thatplays back the video content, or can be controlled by a control serveror the like used to control these devices via a network.

As described above, the change in the way of presenting the impressionobject 10 in the video content depending on the user's sense type makesit possible for each user to understand the information with ease,thereby making it easy to impress the impression object 10 to the user.

An information presentation system including the information processingapparatus for executing such processing and an information presentationway by using this system are now described in detail.

<2. Configuration of Information Processing Apparatus>

The configuration of an information presentation system 100 according toan embodiment of the present disclosure is now described with referenceto FIGS. 3 to 8. Moreover, FIG. 3 is a functional block diagramillustrating an exemplary configuration of the information presentationsystem 100 according to the present embodiment of the presentdisclosure. FIG. 4 is a diagram illustrated to describe the relationshipbetween biometric information and user's reaction as an example ofinformation held by a reaction evaluation information storage unit 130.FIG. 5 is a diagram illustrated to describe an indicator used toevaluate user's reaction to a stimulus. FIG. 6 is a diagram illustratedto describe an indicator in a case where user's reaction to a stimulusis evaluated from a facial expression. FIG. 7 is a diagram illustratedto describe an example of sense type information 141 stored in a usermodel storage unit 140. FIG. 8 is a diagram illustrated to describe anexample of a stimulus reaction history table 143 stored in the usermodel storage unit 140.

The information presentation system 100 according to the presentembodiment includes sensors 110, a model setting unit 120, the reactionevaluation information storage unit 130, the user model storage unit140, a presentation processing unit 150, a content storage unit 160, anda presentation unit 170, as illustrated in FIG. 3.

The sensors 110 acquire user-related information that is used to analyzereaction of the user who receives presented information. Examples of thesensors 110 include a biometric sensor 111 for acquiring biometricinformation of the user, a speech acquisition device 113 for acquiringspeech, and an imaging device 115 for capturing an image of the user.

The biometric sensor 111 can be, in one example, a sensor that detects achange in an organ (effector) that reacts when a user receives astimulus from the outside as biometric information. Humans receive astimulus such as sound or light from the external environment throughreceptors such as ears and eyes. The sense is stimulated when thestimulus received by the receptor is transmitted to the cerebral sensorycortex via the nervous system. Then, the cerebral motor cortex, whendetermining movement of the body with respect to this sense, transmits acommand based on determination to the effector and activates theeffector. The variation in the effector caused by this stimulus appearsas reaction to the stimulus. In the present disclosure, the biometricsensor 111 detects such variation in the effector to a stimulus.

FIG. 4 illustrates an example of the effector. As illustrated in FIG. 4,examples of effectors include pupil, salivary gland, bronchial tube,airway secretion, blood pressure, heart rate, liver, gastrointestinaltract, and skin. Each effector functions in cases where the sympatheticnervous system works dominantly in stress state or the parasympatheticnervous system works dominantly in relaxation state, rather than in acase where the user feels a stimulus. In one example, the pupil isdilated, or mydriasis occurs in a case where the user feels discomfortto the stimulus received by the user and the pupil is contracted, ormiosis occurs in a case where the user feels comfort to the stimulusreceived by the user. As described above, the effector shows variationdepending on how the user feels the stimulus from the externalenvironment. Thus, it is possible to estimate the reaction to thestimulus given to the user on the basis of value detected by thebiometric sensor 111. Examples of the biometric sensor 111 include apulse wave sensor or sphygmograph, a perspiration sensor or sweatingmeter, and a blood pressure meter.

Further, the speech acquisition device 113 or the imaging device 115 canbe provided to function as the sensors 110. In one example, theacquisition by the speech acquisition device 113 of the user's speechwhen the user receives the stimulus makes it possible to perceive theintonation or magnitude of the voice, the speed of the voice, or thelike. In addition, the image captured by the imaging device 115 of theuser's facial expression or body's movement when the user receives thestimulus makes it possible to perceive how the user feels the stimuluson the basis of the captured still or moving image. In addition, theimaging device 115 can be used as a biometric sensor, and in oneexample, it is also possible to obtain a heart rate using the face-basedheart rate analysis technique from the image captured by the imagingdevice 115 and to recognize respiration from minimal change in the body.

As described above, the sensors 110 preferably have at least one of thebiometric sensor 111 or the imaging device 115, and it is possible torecognize more accurately the user's reaction as more information isacquired. The Internet-of-Things (IoT) sensors or the like can be usedas the sensors 110, in addition to the biometric sensor 111, the speechacquisition device 113, and the imaging device 115. The detection valuesacquired by the sensors 110 are output to the model setting unit 120 assensor information.

The model setting unit 120 sets a user model representing the user'sreaction to the stimulus for each user on the basis of the sensorinformation. The model setting unit 120 first analyzes the sensorinformation and estimates the user's reaction to the stimulus presentedto the user. In this event, the model setting unit 120 can estimate theuser's reaction with reference to the reaction evaluation informationstorage unit 130 to be described later. Moreover, the reactionevaluation information storage unit 130 stores, in one example, therelationship between the biometric information and the user's reactionillustrated in FIG. 4, a two-axis mapping (FIG. 5) representing innerpsychological states of the user, the relationship between the user'sfacial expression and emotion (FIG. 6), or the like.

In one example, the model setting unit 120 can estimate the user'sreaction from variation in the effector illustrated in FIG. 4 on thebasis of the biometric information acquired by the biometric sensor 111.In one example, when the user's pupil is acquired in the form of animage as the biometric information, the model setting unit 120 detectsvariation in the magnitude of the pupil, it is determined that the useris in stress state upon the pupil dilatation (mydriasis) and the user isin relaxation state upon the pupil contraction (miosis). In a case wherethere are a plurality of acquired sensor information items, the user'sreaction can be estimated for each item of the sensor information. Then,the model setting unit 120 records contents of the stimulus presented tothe user and the estimated user's reaction in the user model storageunit 140 as stimulus reaction history information.

Further, the model setting unit 120 evaluates the estimated user'sreaction and sets the user model. The user model represents the user'sdominant sense, and in one example, is represented as the user's sensetype. The presentation of each information item based on the user modelthat is set for each user makes it possible to appropriately stimulatedifferent dominant senses for each user, thereby allowing each user toeasily accept information. The model setting unit 120 stores the setuser model in the user model storage unit 140 to be described later. Inaddition, the model setting unit 120 can update the user model on thebasis of the reaction to the stimulus given to the user.

The reaction evaluation information storage unit 130 is a storage unitthat stores information used to estimate the user's reaction to thestimulus presented to the user by the model setting unit 120. Thereaction evaluation information storage unit 130 can store, in oneexample, a circular model representing inner psychological states of theuser as illustrated in FIG. 5, in addition to the relationship betweenthe biometric information and the user's reaction illustrated in FIG. 4.In the circular model illustrated in FIG. 5, the user's reaction to thestimulus is represented as to whether the emotion is positive ornegative on one axis and is represented as the excitement degree ofemotion on the other axis (herein, referred to as “arousal level”). Itis also possible to associate the arousal levels shown in FIG. 5 withthe variation in the effector to the stimulus from the externalenvironment illustrated in FIG. 4. The mapping by the model setting unit120 of an emotion that is specified on the basis of on the sensorinformation obtained by the sensors 110 to the circular model of FIG. 5makes it also possible to quantitatively represent the tendency of theuser's reaction to the stimulus.

Further, the reaction evaluation information storage unit 130 can hold,in one example, the relationship between facial expressions and emotionsas illustrated in FIG. 6. The facial expression whose corners of themouth and outer corners of the eyes rises or falls, or the facialexpression that changes due to wrinkles between the eyebrows or the likerepresent emotions at that time, such as disgust, anger, surprise,contempt, fear, sadness, or the like. Thus, the characteristic parts ofthe face forming facial expressions for various emotions are held in thereaction evaluation information storage unit 130, so the model settingunit 120 is capable of extracting the characteristic parts by analyzingthe image captured by the imaging device 115 and is capable ofspecifying the emotion in which the extracted characteristic partappears.

Moreover, FIGS. 4 to 6 are examples of the information stored in thereaction evaluation information storage unit 130. The informationpresentation system according to the present disclosure does notnecessarily include all of these pieces of information, or can includeother pieces of information. In addition, the information stored in thereaction evaluation information storage unit 130 can be set in advanceor be updated as appropriate.

The user model storage unit 140 is a storage unit that stores a usermodel representing the user's reaction to the stimulus. In the presentembodiment, the user model storage unit 140 has user's sense typeinformation 141 and a stimulus reaction history table 143. The sensetype information 141 stores the sense type of each user estimated by themodel setting unit 120 as a user model. In the sense type information141, in one example, the proportion of each of visual, auditory, andtactile sense types is included for each user, as illustrated in FIG. 7.Some people have one sense that works dominantly, and others havemultiple senses that work dominantly in the same degree. Thus, asillustrated in FIG. 7, the representation of the extent to which eachsense type dominantly works as the proportion makes it possible to set astimulus more suitable for each user. The sense type information 141 isa sense type estimated on the basis of the information stored in thestimulus reaction history table 143.

Further, the stimulus reaction history table 143 stores information suchas contents presented by the information presentation system 100,stimulus information that is set, reaction of the user to the stimulusinformation, effect on the user, and the like. An exemplaryconfiguration of the stimulus reaction history table 143 is illustratedin FIG. 8. The stimulus reaction history table 143 illustrated in FIG. 8can store time, place, scene, content, stimulus information, user'sreaction, and effect on the user. Information other than thoseillustrated in FIG. 8 can also be stored in the stimulus reactionhistory table 143. In addition, there can be information that isincapable of being acquired depending on the scene. In this case, it canbe recorded as being unavailable or not acquired.

Examples of information stored in the stimulus reaction history table143 are shown below.

[Time Information]

Date and day of week of content presentation

Elapsed time from content use start

[Place and Scene (Use Scene)]

Place of use: home, school, friend's house, library, train, etc.

Person who received content presentation: person in question, brothers,parents, friends, teachers, etc.

[Content]

Type of content used: digital picture book, English words teachingmaterials, etc.

[Stimulus Information]

Contents of stimulus instructed by content creator: impression objectand magnitude of stimulus

Contents of stimulus: (stimulus decision guideline) most effectivestimulus, stimulus not recently used, etc.

(actually presented stimulus) move 10% in visual sense type, give soundeffect 5% in auditory sense type, etc.

more specific stimulus presentation contents

[User Reaction]

Reaction from sensor information of biometric sensor: increase in heartrate, increase in perspiration, increase in respiration rate, etc.

Reaction based on information acquired by speech acquisition device andimaging device

Position information in circular model of emotion: (x, y)=(Nx, Ny)

[Effect on User]

Evaluation and its grounds

E.g.) 10-stage evaluation: 7, grounds: from biometric reaction atstimulus presentation

10-stage evaluation: 3, grounds: made mistake in quiz

The effect on the user caused by giving the stimulus stored in thestimulus reaction history table 143 can be updated later. In oneexample, it is assumed that a stimulus is added to cause a user toremember English words in using the content of English words teachingmaterials. There may be a case where the presented stimulus isconsidered to have an effect on the user because the user reacts to beeffective at first glance, but thereafter, when the quiz is carried out,it is found that the user does not understand at all. In this case, thepresented stimulus can be considered to be updated as having no effectin practice.

The information held by the user model storage unit 140 is appropriatelyupdated by the model setting unit 120. In one example, it can be updatedin real time every time there is reaction to a stimulus, or can beupdated in a batch process after a certain period of time. In addition,the presentation processing unit 150 to be described later refers to theuser model storage unit 140 and sets a stimulus to the impression objectincluded in the content.

The presentation processing unit 150 presents various pieces of contentstored in the content storage unit 160 to the user through thepresentation unit 170. The presentation processing unit 150 sets astimulus for the impression object included in the content stored in thecontent storage unit 160 on the basis of the information stored in theuser model storage unit 140 and outputs it to the presentation unit 170.In one example, the presentation processing unit 150 can determinestimulus information to be set on the basis of the sense typeinformation 141 in referring to the user model storage unit 140. Inaddition, the presentation processing unit 150 can, in one example,refer to the stimulus reaction history table 143, extract historyinformation relating to the current stimulus from the previous stimuluscontent and the history of the reaction, and check the reaction to thestimulus and its effect on the basis of the extracted information. Then,the presentation processing unit 150 can determine stimulus informationto be set currently. In addition, the presentation processing unit 150can set, in one example, the stimulus information on the basis of usercharacteristics such as user's preference or user information set by theuser, in addition to the user model.

The content storage unit 160 is a storage unit that stores content to bepresented to the user. The content storage unit 160 can be provided inthe same equipment or server as the presentation processing unit 150, orcan be content held on the cloud. The content is not particularlylimited, but content that can add a stimulus to the user in presentingthe content can be assumed. In addition, examples of the content includedigital content. In one example, educational content such as learningdrills, book content such as digital picture books, AR content providedby synthesizing and displaying images in real time on real video, or thelike is applicable.

The presentation unit 170 presents content to the user together with thestimulus that is set in the impression object. The presentation unit 170includes, in one example, a display unit that displays information, asound output unit that outputs sound, a vibration generation unit thatvibrates equipment, and the like. Moreover, the content and the stimulusthat is set in the impression object are not necessarily presented fromthe same equipment. In one example, in the case of imparting vibrationtogether with presentation of the impression object, the contentincluding the impression object is displayed on a tablet terminal, andanother device such as a wristband terminal or smartphone can bevibrated in synchronization with display of the impression object.

<3. Information Presentation Way>

A basic way of presenting information performed by the informationpresentation system 100 illustrated in FIG. 3 is illustrated in FIG. 9.FIG. 9 is a flowchart illustrating an example of an informationpresentation way performed by the information presentation system 100according to the present embodiment.

In the information presentation system 100 according to the presentembodiment, a content creator first selects content to be presented tothe user (S100). In this event, an object to be impressed to the user inthe content is set as an impression object (S110). Steps S100 and S110are stages for content creation before the content is provided to theuser. The content creator does not necessarily set specific movement,speech, or the like for the impression object, but can set only animpression object impressed to the user.

When content whose impression object is set by the content creator isavailable to the user, the user is able to acquire and use the content.When the user starts using the content, the presentation processing unit150 of the information presentation system 100 refers to the user modelstorage unit 140 and determines a way of presenting the content (S120).In one example, the presentation processing unit 150 refers to the sensetype information 141 of the user model storage unit 140 and setsstimulus information corresponding to the sense type of the user whouses the content. In one example, in the case where the user is a visualsense type user, the impression object is displayed by scaling orblinking it. When the content presentation way is determined in stepS120, the content is played back (S130), and the content is presented tothe user. In presenting the impression object, the stimulus informationbeing set is also presented together.

During the content is being presented, biometric information, facialexpression, speech, or the like of the user is acquired by the sensors110 (S140). The sensor information acquired by the sensors 110 is outputto the model setting unit 120. The model setting unit 120 refers to thereaction evaluation information storage unit 130, evaluates the user'sreaction when the stimulus is given, and estimates a sense type (S150).The model setting unit 120 records the presented content, the impressionobject, the set stimulus information, the user's reaction to thestimulus, the effect on the user of the stimulus, or the like in thestimulus reaction history table 143, and updates the sense typeinformation 141 with the sense type estimated currently (S160). Theprocessing from step S120 to SS160 is performed, in one example, untilthe playback of the content ends (S170).

The basic information presentation way performed by the informationpresentation system 100 is described above. Such an informationpresentation way makes it possible to allow the information to bepresented for each user in the most acceptable manner. In addition, itis possible to implement automatically an appropriate stimulus waycorresponding to the user, so the content creator does not necessarilyset a detailed stimulus presentation way in giving the expected stimulusto the impression object.

Moreover, when the user's reaction to the stimulus is not obtained, inone example, a preset fixed user model or a general user model can beset in the user model storage unit 140 as an initial user model. Thefixed user model is not particularly limited, and any optional initialvalue can be set, in one example, by setting the sense type to only“visual sense type”. The general user model can be, in one example, anaverage value of sense type information of other users acquiredpreviously. Alternatively, before presenting the actual content to theuser, content for test used to specify an approximate sense type can bepresented to set the initial user model. In this event, the reaction ofthe user is evaluated on the basis of the sensor information acquiredwhen the test content is presented, and the sense type of the user isestimated. In this manner, the execution of the test processing forsetting the user model of the user allows the stimulus informationsuitable for the user's sense immediately after the start of the contentplayback to be presented.

<4. Use Case>

The use case of the information presentation system according to thepresent embodiment is now described.

[Use Case 1: Digital Picture Book]

A case where the information presentation system 100 according to thepresent embodiment presents a digital picture book as content is nowdescribed with reference to FIGS. 10 to 13. Moreover, FIG. 10 is adiagram illustrated to describe an image of a digital picture bookpresented as content. FIG. 11 is a diagram illustrated to describe anexample of the magnitude of stimulus information to be set in theimpression object. FIG. 12 is a diagram illustrated to describe contentsof the stimulus information to be set for the impression object. FIG. 13is a diagram illustrated to describe a caution issued to a contentcreator in a case where the stimulus information is set excessively.

In the use case described herein, it is considered to, in playing back adigital picture book, set the stimulus information in people, animals,and objects appearing in the story of the digital picture book, and makethe digital picture book fun and easy to remain in the user'simpression. The content of a digital picture book is typically used bydisplaying a still or moving image on a display 20 of a terminal 2, suchas a tablet terminal, as illustrated in FIG. 10. In one example, it isassumed that the digital picture book of “Little Red Riding Hood” is setby a content creator as an impression object to impress the user withthe appearance of Little Red Riding Hood 21 and Wolf 23. In this event,the content creator sets an arousal level indicating the magnitude ofthe stimulus for each impression object. The greater the arousal level,the greater the stimulus. In one example, in the example illustrated inFIG. 11, the arousal level of Wolf is set to 4, and the arousal level ofthe Little Red Riding Hood is set to 2.

The presentation processing unit 150 of the information presentationsystem 100 refers to the sense type information 141 of the user modelstorage unit 140 and sets a stimulus to be given along with the contenton the basis of the sense type of the user and the set arousal level ofthe impression object. FIG. 12 illustrates an example of settingstimulus information and arousal level. Such information can be storedin the user model storage unit 140. In FIG. 12, the magnitude ofmovement of the impression object is set as the stimulus to the visualsense type user, the magnitude of the effect sound is set as a stimulusto the auditory sense type user, and the vibration time of the terminal2 is set as a stimulus to the tactile sense type user. In this example,a user who uses the digital picture book has all characteristics ofvisual, auditory, and tactile sense types, but the visual sense type ismore dominant than the other types, so the content is presented in sucha manner that the movement of the impression object is emphasized morethan other stimuli.

The presentation processing unit 150 moves Wolf 23 of the arousal level4 by 20% more than normal movement, outputs the sound effect with volume10% higher than normal volume, vibrate the terminal 2 for three seconds,on the basis of the relationship between the stimulus information andthe arousal level illustrated in FIG. 12. On the other hand, thestimulus that is set to Little Red Riding Hood 21 of the arousal level 2is smaller than Wolf 23, moves by 10% more than normal movement, outputsthe effect sound with the volume 5% higher than normal sound, andvibrates the terminal 2 for one second. In this manner, the contentcreator automatically sets the specific movement of the impressionobject only by setting of the impression object and the magnitude of thestimulus.

Here, the content creator can set the arousal level for the impressionobject, so there is also the possibility of setting unintended stimulusand distracting the user's attention to the impression object. In oneexample, as shown in the upper portion of FIG. 13, it is assumed thatthe stimulus information is set on a bush 25 in addition to Little RedRiding Hood 21 and Wolf 23 that are impression objects, and the movementor sound effect of each object and the vibration of the terminal 2exceed a predetermined level. The determination as to whether or notexcessive stimulus is set is performed depending on whether the numberof objects for which stimulus information is set among impressionobjects displayed at the same time is equal to or more than apredetermined number and whether each arousal level is equal to or morethan 4. In the case where excessive stimulus is set, when the contentcreator checks the creation details, in one example, as shown in thelower portion of FIG. 13, the user can be notified by displaying amessage 27 indicating that excessive stimulus is set on the display 20,outputting sound, or the like.

[Use Case 2: Presentation of Guide Information for Each Sense Type]

A case where guide information using AR as content is presented by theinformation presentation system 100 according to the present embodimentis now described with reference to FIG. 14. FIG. 14 is a diagramillustrated to describe an example of presenting guide informationcorresponding to the sense type of the user. Here, an example in whichthe guide information using AR superimposed on the real image beingdisplayed is suitably presented depending on the sense type of the useris illustrated. The guide information corresponds to the impressionobject. In this event, in addition to a smartphone or a tablet terminal,a head mounted display, an eyewear terminal, or the like can be used asa terminal 3 on which the real image and the guide information aredisplayed.

In the example illustrated in FIG. 14, guide information used to guidethe user to an annex is presented. In this event, the content creatorsets only a place where the user makes a destination as the impressionobject. When the user instructs the terminal 3 for guidance to theannex, the presentation processing unit 150 of the informationpresentation system 100 refers to the user model storage unit 140 toacquire the sense type of the user. Then, the guide information ispresented depending on the sense type of the user. In one example, aguide object 31, which indicates visually the position of the annexdisplayed on the display 30, is highlighted and displayed to the visualsense type user. In one example, the guide object 31 is displayed on thedisplay 30 to be smaller than the case where the guide object 31 ispresented to the visual sense type user, but the position of the annexis notified by sound to the auditory sense type user. Furthermore, inone example, the guide object 31 is displayed on the display 30 to besmaller as in the case of the auditory sense type user, but the positionof the annex can be notified to the tactile sense type user by vibratingthe terminal 3 in the case where the annex is displayed in the display30.

Further, it is also possible to estimate a dominant sense of the userfrom the behavior of the user at the time of stopping the presentationof the guide information. In one example, as processing of stopping thepresentation of guide information, three actions are set, that is,winking after checking the guide, “OK” after checking the guide, andpointing the finger after checking the guide. In any of these actions,the presentation of the guide information is similarly stopped, but itcan be assumed that the action selected by the user is naturallyselected by the dominant sense. In one example, it can be determinedthat the user is the visual sense type user in the case where the userwinks after checking the guide, the user is the auditory sense type userin the case where the user says “OK” after checking the guide, and theuser is the tactile sense type user in the case where the user points toa finger after checking the guide. It is possible to use such actions toestimate the sense type of the user by holding the actions in the usermodel storage unit 140.

[Use case 3: Digital teaching materials]

A case of presenting a learning digital teaching material by theinformation presentation system 100 according to the present embodimentis now described.

(1) English Word Learning Method

A case where English word teaching materials are presented as content bythe information presentation system 100 according to the presentembodiment is now described with reference to FIGS. 15 and 16. FIG. 15is a diagram illustrated to describe an example of presenting words tothe visual sense type user. FIG. 16 is a diagram illustrated to describean example of presenting words to the tactile sense type user. This usecase presents English words in such a manner that the user can easilyremember English words in remembering English words using English wordteaching materials. Here, the English word is the impression object, andin FIGS. 15 and 16, the English word “elephant” is an impression object41.

When the user starts to learn English words using a tablet terminal 4,the presentation processing unit 150 refers to the user model storageunit 140 to acquire the sense type of the user. Then, an English wordthat is the impression object 41 is presented depending on the sensetype of the user. In one example, for the visual sense type user, anEnglish word “elephant” is displayed on the display 40, and alphabets 41a to 41 h that constitute the word are displayed in such a manner thateach character differs from other alphabets. In one example, in theexample of FIG. 15, characters “e”, “1”, “e”, . . . are displayed fromthe left while enlarging sequentially each character. When the characteris enlarged, the color of the character can be changed.

Further, in one example, for the auditory sense type user, the Englishword “elephant” is displayed on the display 40. It can be played back as“E-L-E-P-H-A-N-T, ELEPHANT” by speech. Furthermore, in one example, forthe tactile sense type user, as shown in the upper portion of FIG. 16,the English word “elephant” is initially displayed in a thin form on thedisplay 40. This is referred to as a draft object 43. Then, the user iscaused to trace the draft object 43 displayed on the display 40 with anoperation object, such as a touch pen 6 or a finger, and to write theEnglish word.

As described above, the use of the information presentation system 100according to the present embodiment makes it possible to change thepresentation of English words depending on the user's sense type,thereby presenting the information in a way that the user can remembereasily.

(2) Change of Content Presentation Depending on Change in User Reaction

In a case where a digital teaching material is used for userself-learning, appropriate stimulus information given depending on thesense type of the user makes it possible to be expected to improvememory ability or sustained concentration. In addition, it is said thatnot only stimuli having good compatibility but also various stimuli aregiven to the user, so the brain is activated and the memory ability isimproved. Thus, in the digital teaching materials, it is possible for animportant part or a key point to use the stimulus having highcompatibility corresponding to the user's sense type, and for otherparts to use other stimuli. In this manner, the balance given to the wayof presenting information for each user makes it possible to supporteffectively the activation of the brain. In addition, in some cases, theuser's reaction is weakened for all stimuli. Conversely, it may besensitive for minor stimuli. In such a case, the balance is given in thelearning itself, in one example, by offering a rest, thereby making thelearning efficient.

FIG. 17 illustrates an example of processing in the case of changing theway of presentation of content depending on a change in the user'sreaction. When the user starts using the content, the presentationprocessing unit 150 of the information presentation system 100 refers tothe user model storage unit 140 and determines the way of presentationof content (S200). In one example, the presentation processing unit 150refers to the sense type information 141 of the user model storage unit140 and sets stimulus information corresponding to the sense type of theuser who uses the content. When the content presentation way isdetermined in step S200, the content is played back (S210), and thecontent is presented to the user. In presenting an impression object,the set stimulus information is also presented.

When the content is being presented, the sensors 110 acquire biometricinformation, facial expression, speech, or the like of the user (S220).The sensor information acquired by the sensors 110 is output to themodel setting unit 120. The model setting unit 120 refers to thereaction evaluation information storage unit 130, evaluates the user'sreaction when the stimulus is given, and estimates the sense type(S230). Here, the model setting unit 120 determines whether the user'sreaction is lower than a level at the time when the learning hascontinued so far by a predetermined ratio or is higher than the level(S240). In one example, when the user's concentration ability expires,the spiritual perspiration disappears. The determination in step S240can be performed by utilizing such a change that the degree of change inbiometric information is reduced.

In a case where the condition in step S240 is not satisfied and theuser's reaction does not change so much, the processing returns to stepS210 to continue the learning. On the other hand, in a case where thecondition in step S240 is satisfied and the user's reaction is decreasedor excessive, the presentation processing unit 150 determines whether ornot there is stimulus information that is not set so far (S250). In thecase where there is stimulus information that is not set, thepresentation processing unit 150 changes the stimulus information at thetime of presenting the impression object in anticipation of improvingthe user's reaction (S260), returns to step S210, continues thelearning. On the other hand, in the case where there is no stimulusinformation that is not set in step S250, the presentation processingunit 150 offers a rest or taking a deep breath to the user to havebalanced learning itself (S270).

Such a content presentation way allows what the user has learned to bekept as a record not only in the scale of time but also in terms of thequality of how much concentration to learn. In addition, for thelearning contents to be an impression object of the content, the degreeof stimulus information can be changed depending on the user'sproficiency level. In one example, the stimulus information of a highlevel of proficiency is set to be weak and the stimulus information of alow level of proficiency is set to be strong in the digital teachingmaterials, so it is possible to give much impression to a portion thatis not fixed to the user's memory. The degree of proficiency of the usercan be determined, in one example, by evaluation based on the result ofthe quiz, the number of times of content playback, or the like.

Furthermore, it is also possible to perceive the trend of how to proceedwith learning by recording the learning situation of the user for acertain period of time. In one example, at the time of learning, someusers who present an answer example and then solve exercises are fewerburdens, but some users who solve exercises and then present an answerexample are fewer burdens. Thus, the quantitative evaluation of thereaction in the learning process for each user and comparison betweenthe reactions depending on the difference in the learning process allowthe learning process with learning in which the user is easy to fix thelearning content to be determined. This makes it possible to lower thelearning load of the user and make it efficient to learn.

[Use Case 4: Use of Estimated User Model] (1) Learning Support (ClassDivision or Team Division)

The information presentation system 100 according to the presentembodiment makes it possible to specify the user model such as the sensetype of the user. Thus, students of the same type are organized into thesame class or the same team on the basis of the user model of thespecified user, so a teacher can teach the class according to the typeof the students. It is possible to take a lesson according to thespecified sense of the students, so the degree of comprehension of thelearning contents increases, thereby taking an efficient lesson. Inaddition, in appointing teachers, a teacher having a type that matchesthe type of students can be appointed, so it is expected that theteacher and students can communicate with each other in unconsciousportions, and their communications can be performed satisfactorily.

(2) Theme Park, Art Gallery, and Exhibition

Further, the use of the user model that can be specified by theinformation presentation system 100 according to the present embodimentmakes it possible to select and adjust a stimulus that is easy for auser to receive at a theme park, an art gallery, an exhibition, or thelike. In one example, as the production of an attraction, in the themepark, stimulus information that is more likely to be interested is setdepending on the sense type of each user, such as entering from soundfor an auditory sense type person or entering from light for a visualsense type person.

(3) Communication Support

Furthermore, the information presentation system 100 according to thepresent embodiment is capable of specifying the user model, so it ispossible to perceive the type of the partner in advance at the time ofcommunicating with the person who is meeting for the first time, therebymaking it easy to communicate. In one example, in the translationsystem, a translation presentation way corresponding to the sense typeof the partner or its effect can be set as stimulus information.

<5. Hardware Configuration>

An exemplary hardware configuration of a functional unit thatconstitutes the information presentation system 100 according to thepresent embodiment is now described. FIG. 18 is a hardware configurationdiagram illustrating the hardware configuration of a functional unitthat constitutes the information presentation system 100 according tothe present embodiment. Although FIG. 18 is described as an example ofthe hardware configuration of an information processing apparatus 900including the respective functional units illustrated in FIG. 3, thesimilar configuration can be used in the case of an apparatus havingonly some of the functional units illustrated in FIG. 3.

As described above, the information processing apparatus 900 accordingto the present embodiment can be configured as a processing device suchas a computer. The information processing apparatus 900 includes acentral processing unit (CPU) 901, a read only memory (ROM) 902, arandom access memory (RAM) 903, and a host bus 904 a, as illustrated inFIG. 18. In addition, the information processing apparatus 900 includesa bridge 904, an external bus 904 b, an interface 905, an input device906, an output device 907, a storage device 908, a drive 909, aconnection port 911, and a communication device 913.

The CPU 901 functions as an arithmetic processing unit and a controlunit, and controls the overall operation in the information processingapparatus 900 in accordance with various programs. In addition, the CPU901 can be a microprocessor. The ROM 902 stores programs, operationparameters, or the like used by the CPU 901. The RAM 903 temporarilystores a program to be used in the execution of the CPU 901 and storesparameters or the like that are appropriately changed in its execution.These are mutually connected through the host bus 904 a composed of aCPU bus or the like.

The host bus 904 a is connected to the external bus 904 b, such asperipheral component interconnect/interface (PCI) bus, via the bridge904. Moreover, the host bus 904 a, the bridge 904, and the external bus904 b are not necessarily configured as independent components, buttheir functions can be equipped on one bus.

The input device 906 includes an input means that allows the user toinput information, such as a mouse, a keyboard, a touch panel, a button,a microphone, a switch, and a lever, and includes an input controlcircuit for generating an input signal on the basis of an input by theuser and outputting it to the CPU 901. The output device 907 includes,in one example, a display device such as a liquid crystal display (LCD)device, an organic light emitting diode (OLED) device, and a lamp, andan audio output device such as a loudspeaker.

The storage device 908 is an example of a storage unit of theinformation processing device 900 and is a device used to store data.The storage device 908 can include a storage medium, a recording devicethat records data in the storage medium, a reading device that readsdata from the storage medium, a deletion device that deletes datarecorded in the storage medium, and the like. The storage device 908drives a hard disk, and stores programs executed by the CPU 901 andvarious data.

The drive 909 is a reader-writer for a storage medium, which isincorporated in the information processing apparatus 900 or externallyattached thereto. The drive 909 reads information recorded on aremovable recording medium such as a mounted magnetic disk, opticaldisk, magneto-optical disk, semiconductor memory, or the like, andoutputs the information to the RAM 903.

The connection port 911 is an interface connected to an external deviceand, in one example, is a connection port with an external devicecapable of transmitting data by universal serial bus (USB) or the like.The communication device 913 is a communication interface constituted asa communication device or the like for the connection to a communicationnetwork 5. In addition, the communication device 913 can be a wirelesslocal area network (LAN) compatible communication device, a wireless USBcompatible communication device, or a wire communication device thatperforms wired communication.

The preferred embodiment(s) of the present disclosure has/have beendescribed above with reference to the accompanying drawings, whilst thepresent disclosure is not limited to the above examples. A personskilled in the art may find various alterations and modifications withinthe scope of the appended claims, and it should be understood that theywill naturally come under the technical scope of the present disclosure.

Further, the effects described in this specification are merelyillustrative or exemplified effects, and are not limitative. That is,with or in the place of the above effects, the technology according tothe present disclosure may achieve other effects that are clear to thoseskilled in the art from the description of this specification.

Additionally, the present technology may also be configured as below.

(1)

An information processing apparatus including:

a processing unit configured to present content to a user on a basis ofsensor information acquired by a sensor configured to detect reaction ofthe user to a stimulus given to the user.

(2)

The information processing apparatus according to (1),

in which the processing unit includes

a model setting unit configured to set, for each user, a user modelrepresenting the reaction of the user to the stimulus on the basis ofthe sensor information, and

a presentation processing unit configured to execute presentationprocessing of presenting the content to the user on a basis of the usermodel.

(3)

The information processing apparatus according to (2),

in which a plurality of sense types are set depending on the reaction ofthe user to the stimulus,

the model setting unit specifies one or the plurality of sense typescorresponding to the reaction of the user on the basis of the sensorinformation and sets the sense type as the user model.

(4)

The information processing apparatus according to (3),

in which the sense type includes at least a visual sense type, anauditory sense type, and a tactile sense type.

(5)

The information processing apparatus according to (3) or (4),

in which the model setting unit, in a case where the plurality of sensetypes correspond to the reaction of the user, gives weighting to thecorresponding sense types, and sets the sense types and the weighting asthe user model.

(6)

The information processing apparatus according to any one of (2) to (5),

in which a preset initial user model is initially set as the user model.

(7)

The information processing apparatus according to any one of (2) to (5),

in which the presentation processing unit executes test processing ofpresenting test content to the user, and

the model setting unit evaluates the reaction of the user on the basisof the sensor information in presenting the test content, and performsinitial setting of the user model of the user on a basis of anevaluation result.

(8)

The information processing apparatus according to any one of (2) to (7),

in which the model setting unit evaluates the reaction of the user onthe basis of the sensor information in presenting the content by thepresentation processing unit and updates the user model of the user on abasis of an evaluation result.

(9)

The information processing apparatus according to any one of (2) to (8),

in which the presentation processing unit

-   -   sets stimulus information based on the user model on an        impression object used to give an impression to the user among        objects included in the content, and    -   executes processing of presenting the impression object on a        basis of the stimulus information.        (10)

The information processing apparatus according to (9),

in which the stimulus information is information used to scale up ordown the impression object.

(11)

The information processing apparatus according to (9) or (10),

in which the stimulus information is information used to blink theimpression object.

(12)

The information processing apparatus according to any one of (9) to(11),

in which the stimulus information is information used to add speech tothe impression object to be displayed.

(13)

The information processing apparatus according to any one of (9) to(13),

in which the stimulus information is information used to vibratepredetermined equipment together with presentation of the impressionobject.

(14)

The information processing apparatus according to any one of (9) to(13),

in which the presentation processing unit changes the stimulusinformation to be set on a basis of a degree of importance of theimpression object.

(15)

The information processing apparatus according to any one of (1) to(14),

in which the processing unit presents the content to the user further ona basis of a user characteristic.

(16)

The information processing apparatus according to any one of (1) to(15),

in which the sensor includes at least one of a biometric sensorconfigured to acquire biometric information of the user or an imagingdevice configured to capture an image of the user.

(17)

An information processing method including:

presenting content together with a stimulus;

detecting, by a sensor, reaction of a user to the stimulus given to theuser; and

estimating a dominant sense of the user on a basis of sense informationacquired by the sensor.

(18)

A computer program causing a computer to function as an informationprocessing apparatus including:

a processing unit configured to present content to a user on a basis ofsensor information acquired by a sensor configured to detect reaction ofthe user to a stimulus given to the user.

REFERENCE SIGNS LIST

-   10 impression object-   100 information presentation system-   110 sensors-   111 biometric sensor-   113 speech acquisition device-   115 imaging device-   120 model setting unit-   130 reaction evaluation information storage unit-   140 user model storage unit-   141 sense type information-   143 stimulus reaction history table-   150 presentation processing unit-   160 content storage unit-   170 presentation unit

1. An information processing apparatus comprising: a processing unitconfigured to present content to a user on a basis of sensor informationacquired by a sensor configured to detect reaction of the user to astimulus given to the user.
 2. The information processing apparatusaccording to claim 1, wherein the processing unit includes a modelsetting unit configured to set, for each user, a user model representingthe reaction of the user to the stimulus on the basis of the sensorinformation, and a presentation processing unit configured to executepresentation processing of presenting the content to the user on a basisof the user model.
 3. The information processing apparatus according toclaim 2, wherein a plurality of sense types are set depending on thereaction of the user to the stimulus, the model setting unit specifiesone or the plurality of sense types corresponding to the reaction of theuser on the basis of the sensor information and sets the sense type asthe user model.
 4. The information processing apparatus according toclaim 3, wherein the sense type includes at least a visual sense type,an auditory sense type, and a tactile sense type.
 5. The informationprocessing apparatus according to claim 3, wherein the model settingunit, in a case where the plurality of sense types correspond to thereaction of the user, gives weighting to the corresponding sense types,and sets the sense types and the weighting as the user model.
 6. Theinformation processing apparatus according to claim 2, wherein a presetinitial user model is initially set as the user model.
 7. Theinformation processing apparatus according to claim 2, wherein thepresentation processing unit executes test processing of presenting testcontent to the user, and the model setting unit evaluates the reactionof the user on the basis of the sensor information in presenting thetest content, and performs initial setting of the user model of the useron a basis of an evaluation result.
 8. The information processingapparatus according to claim 2, wherein the model setting unit evaluatesthe reaction of the user on the basis of the sensor information inpresenting the content by the presentation processing unit and updatesthe user model of the user on a basis of an evaluation result.
 9. Theinformation processing apparatus according to claim 2, wherein thepresentation processing unit sets stimulus information based on the usermodel on an impression object used to give an impression to the useramong objects included in the content, and executes processing ofpresenting the impression object on a basis of the stimulus information.10. The information processing apparatus according to claim 9, whereinthe stimulus information is information used to scale up or down theimpression object.
 11. The information processing apparatus according toclaim 9, wherein the stimulus information is information used to blinkthe impression object.
 12. The information processing apparatusaccording to claim 9, wherein the stimulus information is informationused to add speech to the impression object to be displayed.
 13. Theinformation processing apparatus according to claim 9, wherein thestimulus information is information used to vibrate predeterminedequipment together with presentation of the impression object.
 14. Theinformation processing apparatus according to claim 9, wherein thepresentation processing unit changes the stimulus information to be seton a basis of a degree of importance of the impression object.
 15. Theinformation processing apparatus according to claim 1, wherein theprocessing unit presents the content to the user further on a basis of auser characteristic.
 16. The information processing apparatus accordingto claim 1, wherein the sensor includes at least one of a biometricsensor configured to acquire biometric information of the user or animaging device configured to capture an image of the user.
 17. Aninformation processing method comprising: presenting content togetherwith a stimulus; detecting, by a sensor, reaction of a user to thestimulus given to the user; and estimating a dominant sense of the useron a basis of sense information acquired by the sensor.
 18. A computerprogram causing a computer to function as an information processingapparatus comprising: a processing unit configured to present content toa user on a basis of sensor information acquired by a sensor configuredto detect reaction of the user to a stimulus given to the user.